| ALASKA | BTT | BETTLES |
| ALASKA | BTI | BARTER ISLAND LRRS |
| LOUISIANA | BTR | BATON ROUGE METROPOLITAN, RYAN FLD |
| MICHIGAN | BTL | BATTLE CREEK W K KELLOGG |
| MONTANA | BTM | BUTTE BERT MOONEY |
| NEVADA | BTY | BEATTY |
| PENNSYLVANIA | BTP | BUTLER CO-K W SCHOLTER FLD |
| SOUTH DAKOTA | BTN | BRITTON MUNI |
| UTAH | BTF | BOUNTIFUL SKYPARK |
| VERMONT | BTV | BURLINGTON INTL |